Among the red canister variety of gelatin, there are yet even more decisions to be made! You have two options: kosher or porcine. Kosher meaning, pig-free and from cows only, and porcine which is primarily from pig parts (hide and bones).
A parallel port is an interface allowing a personal computer (PC) to transmit or receive data down multiple bundled cables to a peripheral device such as a printer. The most common parallel port is a printer port known as the Centronics port.
Given that reliable parallel port operation limits one to a cable length of no more than 15 feet, network print servers make a lot more sense. Incidentally, a seemingly slow parallel port can be a victim of an overly long cable -- this malady can also affect network print servers that drive their printers via a parallel port. To understand why, you need to know a little bit about how the Centronics interface operates.